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SQL and SQL Plus Interview Questions


SQL and SQL Plus Interview Questions

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 SQL and SQL Plus Interview Questions
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If a View on a single base table is manipulated will the changes be reflected on the base table ?
If changes are made to the tables which are base tables of a view will the changes be reference on the view. 

Latest Answer: sorting mean puting the value in a particular order , could by alhphabaticgouping mean making a group of same type of values and displaying a single row for that groupexample select deptno, sum(sal)  from emp group by deptno order by 1;first the ...

Latest Answer: LEFT OUTER JOIN, RIGHT OUTER JOIN, FULL OUTER JOIN ...

Latest Answer: We can be selective in joins query. e.g.select e.name,d.cityfrom employee einner join detail don e.employee_id = d.employee_id and d.city in('aaa',bbbb','cccc') ...

Answer posted by Scott on 2005-05-25 18:43:29: SELECT rownum, rowid FROM sometable 
Latest Answer: Besides these, the other pseudo columns are: user,uid ...

Latest Answer: SQL%ISOPEN exists. Oracle always evaluates this to FALSE as PL/SQL closes implicit cursors immediately after they are executed. ...

Latest Answer: Explicit & Implicit crusors have same attributes. ...

Latest Answer: 1. DDL: Data Definition Language2. DML: Data Manipulation Language3. TCL: Transaction Control Language4. DCL: Data Control Language5. DQL: Data Query Language ...

Latest Answer: JOIN:it is nothing but  a query used to retrieve data from more than two tables. ...

Latest Answer: Data Definition Language: Create, AlterData Modification Language: Update,insert, Delete, TruncateData Control Language: Commit, Rollback ...

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